I need to work with ilford hp5 forced to 6400 asa/iso, and my time's tables for developing dont have the developing time for this combination. I use d76 pure, somebody knows what will be the right time to do it? I think that d76 pure with hp5 forced to 1600 asa will be about 18 minutes. will 25 minutes be a right time to start on 6400?(posted 8587 days ago)